Dear doctor, I am a 25 years old adult and I am recently married. I have a elder sister who is not fully normal,but she studied till college 2nd year successfully and is doing computer diploma now. My mother told me that when she was born she fell down from doctor's hand and there was blue mark in her head. My wife is getting tensed by thinking of the same as genetic disorder and she thinks our child will become same like my elder sister. I am really frustrated about this because she is not willing to take a baby. Please suggest me if there is any genetic disorder test I can do which can predict whether our child will be of good health.